运行时错误：为用户声明 attr_protected 或 attr_accessible，但不能同时声明两者
由于短时间内我的 Rails 应用程序在测试套件中产生了以下运行时错误：
RuntimeError: Declare either attr_protected or attr_accessible for User, but not both.
这可能是由 Restful_authentication 的更新引入的。但扫描“attr_protected”的代码只显示它从未被调用。那么为什么会出现这个错误消息呢？
我的用户模型只有以下代码：
attr_accessible :login, :email, :name, :password, :password_confirmation, :identity_url
所以应该完全没问题？有什么线索可以在哪里寻找问题吗？搜索google发现有一些无知的人也只在测试环境中看到这个问题，偶尔在开发环境中也看到这个问题。
Since a short time my rails applications yields the following runtime error in the test suite:
RuntimeError: Declare either attr_protected or attr_accessible for User, but not both.
This was probably introduced by an update to restful_authentication. But scanning the code for "attr_protected" only shows me it is never called. So why this error message?
My user model only has the following code:
attr_accessible :login, :email, :name, :password, :password_confirmation, :identity_url
So it should be perfectly okay? Any clues where to look for the problem? Searching google shows a few clueless people who also see this problem only in test environment and sporadically in the development environment.
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如果您将 RestfulAuthentication 与Friendly_id一起使用，最新版本的Friendly_id可能会带来此错误，如github页面所示：
另外，当使用 grep 查找出现的关键字时，不要忘记在 gems 中 grep因为您可能已经安装了一些插件作为 gem 存档。
If you are using RestfulAuthentication with friendly_id, the latest version of friendly_id can bring this error as indicated on the github page:
Also, when using grep to find occurences of keywords, don't forget to grep also in gems as you may have installed some plugins as gem archive.
您可能在声明attr_protected的User类中包含d 个模块。也许某种测试功能可以做到这一点。You might haveincluded modules into theUserclass that declareattr_protected. Maybe some kind of testing functionality does that.这可能是由于插件添加了
attr_protected。 这可能会有所帮助。This could be due to a plugin adding
attr_protected. This might be helpful.